1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Copyright (c) 2004-2006 Simtec Electronics
4 // Ben Dooks <ben@simtec.co.uk>
5 //
6 // Samsung S3C2440 and S3C2442 Mobile CPU support (not S3C2443)
7
8 #include <linux/kernel.h>
9 #include <linux/types.h>
10 #include <linux/interrupt.h>
11 #include <linux/list.h>
12 #include <linux/timer.h>
13 #include <linux/init.h>
14 #include <linux/serial_core.h>
15 #include <linux/serial_s3c.h>
16 #include <linux/platform_device.h>
17 #include <linux/reboot.h>
18 #include <linux/device.h>
19 #include <linux/syscore_ops.h>
20 #include <linux/clk.h>
21 #include <linux/io.h>
22
23 #include <asm/system_misc.h>
24 #include <asm/mach/arch.h>
25 #include <asm/mach/map.h>
26 #include <asm/mach/irq.h>
27
28 #include "map.h"
29 #include <asm/irq.h>
30
31 #include "regs-clock.h"
32 #include "regs-gpio.h"
33
34 #include "devs.h"
35 #include "cpu.h"
36 #include "pm.h"
37
38 #include "s3c24xx.h"
39 #include "nand-core-s3c24xx.h"
40 #include "regs-dsc-s3c24xx.h"
41
42 static struct map_desc s3c244x_iodesc[] __initdata __maybe_unused = {
43 IODESC_ENT(CLKPWR),
44 IODESC_ENT(TIMER),
45 IODESC_ENT(WATCHDOG),
46 };
47
48 /* uart initialisation */
49
s3c244x_init_uarts(struct s3c2410_uartcfg * cfg,int no)50 void __init s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no)
51 {
52 s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no);
53 }
54
s3c244x_map_io(void)55 void __init s3c244x_map_io(void)
56 {
57 /* register our io-tables */
58
59 iotable_init(s3c244x_iodesc, ARRAY_SIZE(s3c244x_iodesc));
60
61 /* rename any peripherals used differing from the s3c2410 */
62
63 s3c_device_sdi.name = "s3c2440-sdi";
64 s3c_device_i2c0.name = "s3c2440-i2c";
65 s3c_nand_setname("s3c2440-nand");
66 s3c_device_ts.name = "s3c2440-ts";
67 s3c_device_usbgadget.name = "s3c2440-usbgadget";
68 s3c2410_device_dclk.name = "s3c2440-dclk";
69 }
70
71 /* Since the S3C2442 and S3C2440 share items, put both subsystems here */
72
73 struct bus_type s3c2440_subsys = {
74 .name = "s3c2440-core",
75 .dev_name = "s3c2440-core",
76 };
77
78 struct bus_type s3c2442_subsys = {
79 .name = "s3c2442-core",
80 .dev_name = "s3c2442-core",
81 };
82
83 /* need to register the subsystem before we actually register the device, and
84 * we also need to ensure that it has been initialised before any of the
85 * drivers even try to use it (even if not on an s3c2440 based system)
86 * as a driver which may support both 2410 and 2440 may try and use it.
87 */
88
s3c2440_core_init(void)89 static int __init s3c2440_core_init(void)
90 {
91 return subsys_system_register(&s3c2440_subsys, NULL);
92 }
93
94 core_initcall(s3c2440_core_init);
95
s3c2442_core_init(void)96 static int __init s3c2442_core_init(void)
97 {
98 return subsys_system_register(&s3c2442_subsys, NULL);
99 }
100
101 core_initcall(s3c2442_core_init);
102
103
104 #ifdef CONFIG_PM_SLEEP
105 static struct sleep_save s3c244x_sleep[] = {
106 SAVE_ITEM(S3C2440_DSC0),
107 SAVE_ITEM(S3C2440_DSC1),
108 SAVE_ITEM(S3C2440_GPJDAT),
109 SAVE_ITEM(S3C2440_GPJCON),
110 SAVE_ITEM(S3C2440_GPJUP)
111 };
112
s3c244x_suspend(void)113 static int s3c244x_suspend(void)
114 {
115 s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
116 return 0;
117 }
118
s3c244x_resume(void)119 static void s3c244x_resume(void)
120 {
121 s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
122 }
123
124 struct syscore_ops s3c244x_pm_syscore_ops = {
125 .suspend = s3c244x_suspend,
126 .resume = s3c244x_resume,
127 };
128 #endif
129